Mining-machine



(No Model.)

I. BAIN. MINING MACHINE.

No. 433.612. Patented Aug. 5, 1890.

I UN TED STATES PATENT OFFICE,

Forms BAIN, or CHICAGO, ILLINOIS.

MINING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 433,612, dated August5, 1890.

Application filed February 17, 1890. Serial No. 340,801. (No model.)

To all whom it may concern.-

. of the United States, residing at Chicago, in

the county of Cook and State of Illinois, have invented a new and usefulImprovement in Mining-Machines, of which the following'is aspecification.

My invention relates to an improvement in the class of mining-machinesespecially 'used in coal-mining for the purpose of performing theso-called undercutting operation, consisting in forming an elongatedopening or openings near the base of the wall of mineral, thereby toundermine it and facilitate the dislodgment by blasting. Generallystated, a machine of the class referred to involves a stationary framesupporting a longitudinally-movable frame, the latter carrying at itsforward end the cutting mechanism and toward its rear end the motor,preferably electric, suitably geared to the cutting mechanism to actuateit and to the movable frame to effect its'advancement as the cutterspenetrate the wall of mineral and its withdrawal after the outhas beenmade to the desired depth. An improved machine of the class referred tofor producing" the undercutting operation is shown and described indetail in my application for Letters Patent, Serial No. 340,799, filedconcurrently herewith on the 17th day of February, 1890, and so much ofthe said machine as is necessary to permit proper representation of theconstruction and manner of operation of the improvement upon which thepresent application for Letters Patent is founded is illustrated in theaccompanying drawings. I do not, however, for any reason wish to beunderstood as limiting the use of my present improvement to the 0011-struction of mining-machine in connection with which I have stated it tobe shown in the drawings; but, on the contrary, I wish to be understoodas claiming it in connection with any minii'lg-machine involving thegeneral construction hereinbefore outlined.

The object of my improvement is to provide an undercuttingminingnnachine of the class referred to with means actuated by the samepower that operates the cutters and by preference simultaneously withthe latter for producing, the blasting-hole.

To this end my invention consists in the general construction of myimproved. device; and it also consists in details of construction andcombination of parts hereinafter described and claimed.

In the drawings, Figure 1 shows my improvement in side elevation appliedto an undercutting mining-machine, of which only the rear portion ispresented in side elevation. Fig. 2 is a sectional view taken on theline 2 2 of Fig. 1 and viewed in the direction of the arrows; and Fig.3, a section taken on the line 3 of Fig. 1, viewed in the direction ofthe arrow and enlarged.

A is the undercutting-machine, which may involve the construction setforth in my aforesaid concurrent application or any other of the knownconstructions in which are employed a stationary frame supporting alongitudinally-sliding frame provided at its forward end with thecutting mechanism, a motor B on the sliding frame near its rear endhaving its driving-shaft B suitably geared to the cutting mechanism toactuate the latter and to the sliding frame-moving mechanism. The motorB is preferably an electric motor, such as and operated like otherelectric motors on undercutting-machines of the class referred to. Fromthe rear side of the motor extends a frame 0, having at each of itsouter lateral ends a socket r. In the sockets r are supported, as byadjustingscrews 00, posts q, to extend vertically to a desired height,and carrying at their upper ends a bracket D, having at the center ofits vertical portion 0 a journal-bearing n, for a horizontal spindle E,and at the center of its rear horizontal portion 0 an upper bearing mfor a vertical rotary shaft or, jonrnaled at its lower end in a bearingZ, supported to extend outward from the center of the frame 0. Thespindle E toward its forward end is supported in a bearing n on theupper ends of posts q, adjustably supported, as by the set-screws co, insockets r at the ends of a bracket or frame 0, secured to the front endof the motor. Stay-rods 7c are pivoted at one end to the opposite endsof the bracket D, and are adj ustably held toward their opposite ends,as by set-screws :0 in sockets i, swiveled in suitable supports at theopposite sides near the upper portion of the front of the motor. Thespindle E, which is adapted to hold a drill E, as shown,is provided atits rear end with a beveled gear-wheel h, meshing with a similar wheelh, secured to the upper end of the vertical rotary shaft m. The shaft mis provided with a feather-way m and with a beveled gear-Wheeladjustable to any position lengthwise of the shaft and there held, as bythe set-screw 00 and meshing with abeveled gear-wheel f on the rear endof the motor-shaft B. Thus with the parts in the relative positionsillustrated, when the motor B is in operation, and preferably whileperforming its work of actuating the movable frame and the cuttersthereon, the shaft B, through the gears f, g, h, and h, is revolving thedrill-spindle E, thereby causing the drill E to produce a hole for theblasting purpose.

This drilling maybe performed at different heights, owing to theadjustable construction of the parts supporting the drill E permit tingthe latter to operate at different elevations. The primary purpose,however, of constructing the drill and its spindle E to be so adjustableis that it need never be removed from the machine to permit the latterto be moved through openings or doorways, as are common in mines, onlylittle more than high enough to allow the machine without the upperdrill mechanism to be passed through .7 them in moving the machineabout. Accordingly, when necessity for moving the machine arises, onloosening the set-screws 00, as, and x the drill-spindle E will dropsufficiently far to avoid obstruction by itself and its supportingmechanism in moving the machine through the low openings betweenchambers in the mine, the stay-rods being thus permitted to extendreadily through the swiveled sockets i. \Vhen it is desired to again usethe overhead drill, the parts are readily raised and held at the desiredpositions by properly adjusting the set-screws.

What I claim as new, and desire to secure by Letters Patent, is-

1. In combination with an undercutting mining-machine, an overheadrotary drill supported on the machine and geared to the driving-power ofthe undercutting mechanism to be rotated thereby and verticallyadjustable with reference to its support and maintainable in and duringadj nstment. in operative connection With the driving-power,substantially as described.

2. In combination with an undercutting mining-machine, a motor B foractuating the cutting mechanism, posts q and q, adj ustably supported'insockets, and a rotary drill-spindle E for a rotary drill E, j ournaledin bearings supported on the upper ends of the said posts and geared tothe driving-shaft of the motor to be rotated thereby with theundercutting mechanism, substantially as described.

3. In combination With an undercutting mining-machine provided with amotor B for actuating its cutting mechanism, frames 0 and O on oppositesides of the motor,posts q and q, adj ustably supported in sockets onthe said frames, stay-rods k, connecting the posts (1 with the motor andadjustable with the vertical adjustment of, the posts q, and adrillspindle E for a drill E, journaled in bearings supported on theupper ends of the posts q and q and geared to the driving-shaft of themotor, substantially as described.

4. In combination with an undercutting mining-machine provided with amotor 13 for actuating its cutting mechanism, frames 0 and C on oppositesides of the motor, posts q and q, adjustably supported in sockets onthe said frames, swivel-sockets t' on the motor, stay-rods 7c, pivotallyconnected with the posts q near their upper ends and passing through andadjustably secured in, the said swivelsockets, a drill-spindle E for adrill E, journaled in bearings supported on the upper ends of the saidposts and provided with a beveled gear-wheel h, a vertical rotaryfeathered shaft m, having a beveled gear-wheel h at its upper endmeshing with the Wheel h, and toward its opposite end a similargearwheel g, adjustabl y supported in position and meshing with abeveled gear-wheel f on the motor-shaft B, the Whole being constructedand arranged to operate substantially as described.

FOREE BAIN. In presence of J. W. DYRENFORTH, M; J. FRosT.

